Deficiency of which vitamin results in inflammation of skin and eczema along with diarrhoea?

Polio disease is caused by?

DNA is stored majorly in ___ of the cell.

About 70% of the Sun is made up of ____.

Night blindness is caused by the deficiency of vitamin _____.

The phrase ‘Survival of the fittest’ as a way of describing the mechanism of natural selection was coined by __________.

In which part of the female flower does fertilization take place?

Who discovered the first vaccine for smallpox?